双检采集资料合并处理技术研究
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摘要
在滩海地区的地震勘探时,由于海面和海底引起的多次波的干扰问题,这个问题一直妨碍海底勘探的发展。随着海底电缆的双检采集技术的应用,从一定程度上解决了该问题。现阶段发展的双检采集技术就是利用压电检波器和速度检波器对鸣震有相反的响应,将双检资料合并叠加处理,达到压制鸣震的目的。本文从双检合并叠加的原理入手,提出了根据水检和陆检资料自相关函数估算合并系数,找出压制鸣震的最佳比例因子,进行地震数据合并压制海底鸣震的方法。最后结合实际地震资料进行了双检合并压制鸣震的处理,取得了较好的效果。
Seismic exploration in the sea beach area, due to the sea and seabed caused by multiple interference problem, this problem has been to impede the development of undersea exploration. With the application of combining dual-sensor ocean-bottom cable technology,to solve the problem to some extent. The current stage of development of the dual-detector acquisition technology is the use of hydrophone and vertical geophone opposite response reverberation, data merge superimposed dual-sensor processing to achieve the purpose of the suppression of reverberation. Start from dual-sensor data merger superposition principle proposed merger coefficient estimated autocorrelation function under water inspection and land seized, identify best suppress reverberation scale factor, seismic data combined to suppress the seabed reverberation. Finally, the actual seismic data to dualsensor merge suppress reverberation processing, and achieved good results.
Seismic exploration in the sea beach area, due to the sea and seabed caused by multiple interference problem, this problem has been to impede the development of undersea exploration. With the application of combining dual-sensor ocean-bottom cable technology,to solve the problem to some extent. The current stage of development of the dual-detector acquisition technology is the use of hydrophone and vertical geophone opposite response reverberation, data merge superimposed dual-sensor processing to achieve the purpose of the suppression of reverberation. Start from dual-sensor data merger superposition principle proposed merger coefficient estimated autocorrelation function under water inspection and land seized, identify best suppress reverberation scale factor, seismic data combined to suppress the seabed reverberation. Finally, the actual seismic data to dualsensor merge suppress reverberation processing, and achieved good results.
引文
[1]全海燕,韩立强.海底电缆双检接收技术压制水柱混响[J].石油地球物理勘探,2005,40(1):7-12.
[2]曹孟起,等.OBC地震资料处理技术[J].石油地球物理勘探,2004(东部会议专刊).
[3]贺兆全,等.双检理论研究及合成处理[J].石油地球物理勘探,2011,46(4):522-528.
[4]单刚义,等.压电式检波器在高分辨率地震勘探中的试验研究[J].石油物探,2009,48(1):91-95.
[5]周建新,姚姚.双检波器压制海上鸣震[J].中国海上油气(地质),1999,13(5):359-362.
[2]曹孟起,等.OBC地震资料处理技术[J].石油地球物理勘探,2004(东部会议专刊).
[3]贺兆全,等.双检理论研究及合成处理[J].石油地球物理勘探,2011,46(4):522-528.
[4]单刚义,等.压电式检波器在高分辨率地震勘探中的试验研究[J].石油物探,2009,48(1):91-95.
[5]周建新,姚姚.双检波器压制海上鸣震[J].中国海上油气(地质),1999,13(5):359-362.
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